Leo DiCaprio grabbed headlines at the World Economic Forum when he won a Crystal Award, and Bono was seen chatting with Canadian Prime Minister Justin Trudeau at the Swiss summit. But behind the scenes, we hear Kevin Spacey, leader of the Free World on “House of Cards,” has been the de facto mayor of Davos, Switzerland.

Spacey — who also met with Trudeau, along with Leo — popped into Anthony Scaramucci’s annual “Wine Forum” at the Hotel Europe’s Piano Bar, where the elite meet after hours.

We’re told “Mr. Spacey then climbed up on the piano in the packed room of delegates, pledged his love for the Davos experience, encouraged people to talk to him on the street, thanked them for watching ‘House of Cards,’ then serenaded the room.”